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首页> 外文期刊>Chemistry: A European journal >Nitrogen-Doped Porous Carbon Nanosheets from Eco-Friendly Eucalyptus Leaves as High Performance Electrode Materials for Supercapacitors and Lithium Ion Batteries
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Nitrogen-Doped Porous Carbon Nanosheets from Eco-Friendly Eucalyptus Leaves as High Performance Electrode Materials for Supercapacitors and Lithium Ion Batteries

机译：来自环保桉树的氮掺杂多孔碳纳米片作为超级电容器和锂离子电池的高性能电极材料

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摘要

Nitrogen-doped porous carbon nanosheets were prepared from eucalyptus tree leaves by simply mixing the leaf powders with KHCO_3 and subsequent carbonisation. Porous carbon nanosheets with a high specific surface area of 2133 m~2g~(-1) were obtained and applied as electrode materials for supercapacitors and lithium ion batteries. For supercapacitor applications, the porous carbon nanosheet electrode exhibited a supercapacitance of 372 Fg~(-1) at a current density of 500 mAg~(-1) in 1m H_2SO_4 aqueous electrolyte and excellent cycling stability over 15000 cycles. In organic electrolyte, the nanosheet electrode showed a specific capacitance of 71 Fg~(-1) at a current density of 2 Ag~(-1) and stable cycling performance. When applied as the anode material for lithium ion batteries, the as-prepared porous carbon nanosheets also demonstrated a high specific capacity of 819 mAhg~(-1) at a current density of 100 mAg~(-1), good rate capability, and stable cycling performance. The outstanding electrochemical performances for both supercapacitors and lithium ion batteries are derived from the large specific surface area, porous nanosheet structure and nitrogen doping effects. The strategy developed in this paper provides a novel route to utilise biomass-derived materials for low-cost energy storage systems.
机译：通过简单地将叶粉与KHCO_3和随后的碳化混合，由桉树树叶制备氮掺杂多孔碳纳米片。获得高比表面积为2133m〜2g〜（-1）的多孔碳纳米片，并用作超级电容器和锂离子电池的电极材料。对于超级电容器应用，多孔碳纳米片电极在1M H_2SO_4水电解质中的电流密度为500mAg〜（-1）的372 fg〜（-1）的超级电容和超过15000次循环的优异循环稳定性。在有机电解质中，纳米片电极在电流密度为2Ag〜（-1）和稳定的循环性能下，特定电容为71 fg〜（-1）。当作为锂离子电池的阳极材料施加时，制备的多孔碳纳米片也以100mAg〜（-1），良好的速率能力，良好的速率和稳定的循环性能。超级电容器和锂离子电池的出色电化学性能源自大的比表面积，多孔纳米片结构和氮掺杂效应。本文开发的策略提供了利用生物质衍生材料的新型路线，用于低成本储能系统。

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  • 来源
    《Chemistry: A European journal》 |2017年第15期|共8页
  • 作者

    Anjon Kumar Mondal; Katja Kretschmer; Yufei Zhao; Hao Liu; Chengyin Wang; Bing Sun; Guoxiu Wang;

  • 作者单位

    Centre for Clean Energy Technology School of Mathematical and Physical Sciences University of Technology Sydney Broadway Sydney NSW 2007 (Australia);

    Centre for Clean Energy Technology School of Mathematical and Physical Sciences University of Technology Sydney Broadway Sydney NSW 2007 (Australia);

    Centre for Clean Energy Technology School of Mathematical and Physical Sciences University of Technology Sydney Broadway Sydney NSW 2007 (Australia);

    Centre for Clean Energy Technology School of Mathematical and Physical Sciences University of Technology Sydney Broadway Sydney NSW 2007 (Australia);

    College of Chemistry and Chemical Engineering Yangzhou University Yangzhou City Jiangsu Province 225002 (P. R. China);

    Centre for Clean Energy Technology School of Mathematical and Physical Sciences University of Technology Sydney Broadway Sydney NSW 2007 (Australia);

    Centre for Clean Energy Technology School of Mathematical and Physical Sciences University of Technology Sydney Broadway Sydney NSW 2007 (Australia);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    electrode material; lithium ion batteries; nitrogen doping; porous carbon nanosheets; supercapacitors;

    机译：电极材料;锂离子电池;氮掺杂;多孔碳纳米液;超级电容器;

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